From a66be3237f5e9f4b6144cec093b047acfd70ffc6 Mon Sep 17 00:00:00 2001 From: "Pavel V. Shatov (Meister)" Date: Sun, 4 Dec 2016 23:07:58 +0300 Subject: Added README.md with core description, API details, etc Added previously forgotten generic replacements for vendor-specific primitives Minor clean up of comments Slightly reduced power consumption --- rtl/lowlevel/generic/adder47_generic.v | 64 ++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 rtl/lowlevel/generic/adder47_generic.v (limited to 'rtl/lowlevel/generic/adder47_generic.v') diff --git a/rtl/lowlevel/generic/adder47_generic.v b/rtl/lowlevel/generic/adder47_generic.v new file mode 100644 index 0000000..f472061 --- /dev/null +++ b/rtl/lowlevel/generic/adder47_generic.v @@ -0,0 +1,64 @@ +//------------------------------------------------------------------------------ +// +// adder47_generic.v +// ----------------------------------------------------------------------------- +// Generic 47-bit adder. +// +// Authors: Pavel Shatov +// +// Copyright (c) 2016, NORDUnet A/S +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// - Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +//------------------------------------------------------------------------------ + +module adder47_generic + ( + input clk, // clock + input [46: 0] a, // operand input + input [46: 0] b, // operand input + output [46: 0] s // sum output + ); + + // + // Sum + // + reg [46: 0] s_int; + + always @(posedge clk) + s_int <= a + b; + + // + // Output + // + assign s = s_int; + +endmodule + +//------------------------------------------------------------------------------ +// End-of-File +//------------------------------------------------------------------------------ -- cgit v1.2.3